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Choumini01
@Choumini01
April 2019
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On considéré l expression suivante: A = 3ab + 2a - 2b+15. 1)Calculez A lorsque a = 5 et b =2. 2) calculez A lorsque a = 10 et b = 1
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winner123
Verified answer
Bonsoir
a = 3 ab + 2 a - 2 b + 15
a = 3 (5 x 2) + 2( 5) - 2 (2) + 15
a = 30 + 10 - 4 + 15 = 55 - 4 =
51
a = 3 ( 10 x 1) + 2 x 10 - 2 + 15
a = 30 + 20 - 2 + 15 = 68 - 2 =
63
0 votes
Thanks 1
loulakar
il y a une erreur 3(10x1)=30 et non 33
loulakar
Verified answer
1) A=3*5*2+2*5-2*2+15
A=15*2+10-4+15
A=30+6+15
A=36+15
A=51
2) A=3*10*1+2*10-2*1+15
A=30+20-2+15
A=50+13
A=63
0 votes
Thanks 1
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Verified answer
Bonsoira = 3 ab + 2 a - 2 b + 15
a = 3 (5 x 2) + 2( 5) - 2 (2) + 15
a = 30 + 10 - 4 + 15 = 55 - 4 = 51
a = 3 ( 10 x 1) + 2 x 10 - 2 + 15
a = 30 + 20 - 2 + 15 = 68 - 2 = 63
Verified answer
1) A=3*5*2+2*5-2*2+15A=15*2+10-4+15
A=30+6+15
A=36+15
A=51
2) A=3*10*1+2*10-2*1+15
A=30+20-2+15
A=50+13
A=63